CVE-2026-40333

{
  "id": "CVE-2026-40333",
  "sourceIdentifier": "[email protected]",
  "published": "2026-04-18T00:16:37.120",
  "lastModified": "2026-10-26T22:10:00.163",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "libgphoto2 is a camera access and control library. In versions up to and including 2.5.33, two functions in camlibs/ptp2/ptp-pack.c accept a data pointer but no length parameter, performing unbounded reads. Their callers in ptp_unpack_EOS_events() have xsize available but never pass it, leaving both functions unable to validate reads against the actual buffer boundary. Commit 1817ecead20c2aafa7549dac9619fe38f47b2f53 patches the issue."
    },
    {
      "lang": "es",
      "value": "libgphoto2 es una biblioteca de acceso y control de cámaras. En versiones hasta la 2.5.33 inclusive, dos funciones en camlibs/ptp2/ptp-pack.c aceptan un puntero de datos pero ningún parámetro de longitud, realizando lecturas sin límites. Sus llamadores en ptp_unpack_EOS_events() tienen xsize disponible pero nunca lo pasan, dejando ambas funciones incapaces de validar las lecturas contra el límite real del búfer. El commit 1817ecead20c2aafa7549dac9619fe38f47b2f53 parchea el problema."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "gphoto",
          "product": "libgphoto2",
          "versions": [
            {
              "version": "<= 2.5.33",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "attackVector": "PHYSICAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 0.9,
        "impactScore": 5.2
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-04-20T14:51:40.405001Z",
          "id": "CVE-2026-40333",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/gphoto/libgphoto2/commit/1817ecead20c2aafa7549dac9619fe38f47b2f53",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/gphoto/libgphoto2/security/advisories/GHSA-hq94-cp6h-3gjp",
      "source": "[email protected]"
    }
  ]
}